The Lowly Engineer
  • Metasys

    Hybred OR 1 room pressure

    Closed down return damper to make room pressure positive. JCI is waiting on parts to replace, until then leave override on return damper command. I added a annotation to Metasys.

  • Metasys

    5305 Building Radiant

    The water supply feeding the radiant system for our 5305 Building has been valved off at the fill valve.  A copper coupling is leaking in the Dr. McMurtrie’s office ( southeast corner of the 2nd floor).  Brandon & Jim investigating options for repair.  As a ‘just in case’ I have commanded Radiant Pumps 1 & 2 off in METASYS.

  • Metasys

    OSC AHU 53-32 trip

    Osc ahu 53-32 tripped before 4 PM on Saturday, current overload.  Took screen shots off of Metasys and sent to Bernie.  Noticed on start up that return air ductwork was being pulled in a bit, there was lots of suction on the ahu doors, could hardly open them.  O/A dampers were 100% closed,  M/A 100 % open.  Noticed on trends that vfd went to 100% around same time that O/A damper dropped below 10%, and then fan tripped.  Wondering if there isn’t enough return air and it’s causing the motors to over amp.  Maybe putting a o/a damper minimum setting in Metasys could be a test to see if we get anymore trips?  Also found chilled water pump E-9056 was tripped on overload, reset.  Put in hand to test, ran fine.

  • Metasys

    NAE-03 Restored

    It appears NAE-03 died after gen testing.  I programed & replaced with our back-up NAE. All lighting & chillers should be back in auto, resynchronized with schedules, interlocks, & set points and back on Metasys control.